Part of London Beer City:
"Bethnal Green's classiest pub will be hosting Jamil Zainasheff (Heretic founder) for a tap takeover, discussion, q&a and general ribaldry."
For those of you who haven't come across Zainasheff before, he's one of the main contributors to The Brewing Network podcasts and also a regular writer for Brew Your Own magazine. His Heretic beers are meant to be pretty epic. Free of charge.